Lister drive



Sept. 20, 1932. KAUPKE I 7 1,878,407

" LISTER DRIVE Q Filed Aug. 3, 1929 Patented Sept. 20, 1932 UNITED STATES LEE H. KAUPKE, or ROCK ISLAND, ILLINOIISVLVASSIGNOR To 1500K ISLAND rLow oom- PANY, or noox ISLAND, ILLINOIS, A ooRroRA'rIonor ILLINoIsmechanism including but a single drive chain,

on the axle part 17, the remaining portions LISTER DRIVE .Application 'filed August 3, 1,929, .seriai id, 383,360.

This invention relates to improvements in listers, and more particularly to seed can drive connections for crank axle implements of the character described, andhas for its principal object to provide an improved and simplified arrangement of chain te'nsioning" device for automatically maintaining the drive connection from the ground wheel to the axis of the crank axle, and swinging axially with the latter, and the other set extending from the axis of said crank arm to the seed can. In carrying out myinventionI provide an improved and simplified drive and with means for automatically maintaining its tension in all positions of the crank axles.

The invention may best be understood by reference to the accompanying drawing, in which e V V Figure 1 is a perspective view showing portions of a lister frame and seeding mechanism, with the ground wheel removed from the crank axle, and with the crank axle in raised position.

Figure 2 is a view similar to Figure 1, but with the crank axle in lowered position.

Referring to details of the drawing, only a portion of a lister frame is shown,'including a lister beam 10, having a seed can 11 mounted on the rear end thereof in the usual manner. The seed can is provided with a drive sprocket 12 at one side thereof, suitably connected for operating the seed dropping mechanism, which may be of any usual constructlon and 1s not shown in detail herein as it idler P y which y bemounted on an arm 28 and maintained under tension by.

forms no part of the present invention.

A crank axle 15 is rotatably mounted in a bracket 16 on the lister beam 10, and includes an offset axle part 17 on which the ground wheel is mounted. For convenience of illustration, only the bearing sleeve 18 is shown of the wheel being omitted. The crank axleis provided as usual with lifting means to 0on trol the depth of the'lister', herein said lifting means comprising a hand lever 19 having a spring latch 19w adjustably engaging in a toothedsegmentQO, also rigid with the I beam 10'. V v ,7

In the preferred form] shown, the crank axle, "swings-' rearwardly, this arrangement beingespecially preferable in listers, as itenlister.

{ The trained overa sprocket 23 rotatably mounted on the-offset axle part 17 and rigidly conne'cted torotate withthe ground wheel as by spider 24 connectedqto the latter.

' Tensionon thechain is maintained by an auxiliary sprocket 25, carried on a bracket 26' mounted on thecrank axle and offset rearwardly therefromwhen thelatter is in lowered position as shown in Figure 2. The axis 7 of the auxiliary sprocket 25 is arrangedon a radial line extending substantially fat alright drive 'sprock et 12 is driven direct from i the ground wheel through asinglechain22 angle to the crank arm, and approximately thesame distance from the axis of the crank arm as the'axis of the ground wheel. The

arrangement is such-'thatlthe chain [22 is com.

t'inuously engaged with the three "sprockets 23 and 25', and the sprocket 25 takesup all slack in the chain as the crank farmi is swung rearwardly toward the seed can, as shown in Figure 1, in which position the lister is in its lowermost position. Similar I-y, when the crank axle is depressed or swung .pivotally forward anddownward as in Fig ure 2, to elevate the lister, or in any intermediate position, the chain is automatically maintained in proper driving tension.

It may alsof; be desirable to provide an 60 hances stability of the lister when in the f ground, and easeiof lifting] control of the crank arms. The novel form of drive connection above sion in all positions of adjustment of the,

described may be employed on listers of the single or two-row type, inthe latter typeit beingpreferable to connect eachof the seedcans for independentoperation from its adjacent ground wheel.

Although I have illustrated and described one particular embodiment of my invention,

it will be understood thatI do not wish to be limited to the exact construction shown and described, but that various changes and modifications maybe madewithoutdeparting from the spirit and scope of my invention; 7 7

1 I claim as my lnvention z H 1, In alister, aframe, a seed ,can. and

drive means therefor mounted on'the rear of said framey a groundwheel crank axle having bearing in said frame, a sprocket and 7 chain driving connection between sa d seed a can and said crank axle ln cludingi a single chain and an auxiliaryidlercarried on said crank axle in ofiset; relation therewith to maintain the tension of saidchain in the various ad usted pos1t1ons-ofsa1d crank axle.

bearing in said frame, said axle, and Wheel being pivotally movable rearwardly andupwardly to lower said frame relative to the ground, sprocket; and chain driving connection betweensaidseed can and said crank axleincluding a single chain and an auxiliary idler carriedon said crank axle in ofiset relation therewith to maintain the tension ofsaid chain in the various adjusted posie tionsof said crank axle.

3. In a'liste r, a frame, aseed can and drive I means therefor mounted on the rear of said frame, a ground wheel crank axle having bearing in'said frame, said axle being piv' otally movable rearwar'dly and upwardly to lower said frame relative to the groundpa sprocket and chain driving connection between said seed can and'said crank axle in cludinga singlechain and' an auxiliary idler carried on said crank axle'and having its axis'disposed in a radial line substantially at a right angle to said crank axle to maintain the tension'of said chain in thev'arious adjusted positions of said crank axle.

Signed at Rock Island, 111., day of July, 1929.

I LEE HQKAUPKE;

2. Ina lister, a frame, a seed can and drive c 1 meanstherefor mounted on the rear of sa d frame a ground wheel. crank axle having this 27th i 

